InterviewSolution
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InterviewSolution
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A mass m moving horizontally with velocityvo strikes a pendulum of mass m. If the twomasses stick together after the collision,then the maximum height reached by thependulum is.2(a) 02g8g(c) y2vog |
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Answer» Let us take that the pendulum is at rest initially and after the collision the velocity of the system is V .Now from the conservation of momentum we have ,Initial Momentum = Final Momentum⇒mv+m×0=⎛⎝⎜m+m⎞⎠⎟×V⇒mv=2mV⇒V=v/2Nowletustakethattheblockrisestomaximumheighth.So,P.Eofthecombination=K.Eofthecombination⇒(m+m)gh=1/2(m+m)V2⇒2mgh=mV2⇒h=V2/2g⇒h=(v/2)2/2g=v2/8g |
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